Genuine OEM Audi Headlight Lamp Cap, part number 4G0941607A. This cap is designed to seal the rear opening of the headlight assembly, protecting the headlight lamp and its electrical connections from dust, moisture, and debris. It ensures the longevity and optimal performance of the lighting system. Weighing approximately 0.018 kg and with a diameter of about 0.075 meters, this plastic cap provides a secure fit. Genuine OEM caps guarantee the correct dimensions, material integrity, and sealing properties to maintain the headlight's internal environment and prevent premature bulb failure.